20 participants will undergo two cycles of stimulation. The first one will be with r-hFSH though the cycle and the second with r-hFSH then r-hLH. The participants will have 1 month rest cycle between the treatment cycles. r-hFSH doses will be adjusted according to patient response. r-hLH dosing will begin when there are 2 follicles greater than or equal to 14mm in diameter. The does will be 300IU/day and continue until the day of r-hCG administration.